26440442064466 has 4 divisors (see below), whose sum is σ = 39660663096702. Its totient is φ = 13220221032232.

The previous prime is 26440442064403. The next prime is 26440442064469. The reversal of 26440442064466 is 66446024404462.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 23411362883841 + 3029079180625 = 4838529^2 + 1740425^2 .

It is not an unprimeable number, because it can be changed into a prime (26440442064469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6610110516115 + ... + 6610110516118.

Almost surely, 2^{26440442064466} is an apocalyptic number.

26440442064466 is a deficient number, since it is larger than the sum of its proper divisors (13220221032236).

26440442064466 is a wasteful number, since it uses less digits than its factorization.

26440442064466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13220221032235.

The product of its (nonzero) digits is 21233664, while the sum is 52.

The spelling of 26440442064466 in words is "twenty-six trillion, four hundred forty billion, four hundred forty-two million, sixty-four thousand, four hundred sixty-six".